Dynamo-electric machinery.



Ulli

emma-umm riginal applications filed January 2B, 1913. Serial No.744,793, and'ilay 3i, i913, Dvded'and this application filed October19?..5.

To @ZZ cli/icm irl may concern it known that if, Rnorrnxno L Frissen-DEN, of Brookline, in the county oi Norfolk tric lilachinery, of whichthe foilowingis e' specification.

The invention herein described relates to electro dynamic apparatus andmethods and to the generation, the ntirizotion. the trans'- niission andthe receipt of electric energy and more particularly to the productionand detection or compressionol Waves, and still more particularly to'submarino signaling.

It has for its object increased eliciency in these lines.

This application 1s :i division of the ap- A plication iled hy me whimmatured into Let-ters Patent Nef ,167,366, issned Jannw ary 4, 1916,which vos :i division of my application Serial No. 744.793, file/.iJanuary e9, i913.

The invention wiil be understood more particularly by reference. to thedrawings.

in which it is shown in its preferred embodiment.

in the drawings Figure l is ai diagrammatic cross section or :ireciprocating dynamo capable of being' nseci inJv carrying out myinvention. Fig. 2 illustrates the application oi' o gos engine to suchdynamo.

A suitobie form of apparatus for carrying out this invention is shown inFig. Here 40 is a copper tube soy approximately eight inches in diameterand eight inches long (the length being' preferably equal to or lessthan' the diameter). is the magnetizing coii of the magnetic circuit,113-413 being the north pole and lli-14 being thl south pole.The'magnetic flux Hows from 43-i3 through the top air gap to thearmature or core 4l, thence through the bottom air we and hack t iroughthe outside ring',n to t3- Thetnoe 40 lies in the two air gaps and suchpart of it as is not over the. windings 46, is preferably slotted as ator otherwise marie of high resistance. The windings #5.6. i? arepreferably Wound on the core il though they may be Wound the insirle ofthe poles 43 i3, M -44. 'The core ii anci the poles ere preferably slo#.rceliy and reclieliy Specification of Lettere Patent.

Ashown in Fig.

Patented. Jen 2191*.

Serial o. 779,55?. Sei-iai lio. 53,895.

at 67 and 68, respectively. ,The core ie preferably mede of iron sindthe poles are preferably marie ci" sjiit steel `or iron, tube 4C being'attached in any suitable :inner to. the object to he in nict'on orottzichei to the piston oit' en. engine As shown these two Winclings 45,l-i" are two coiis of a single winding though two ve-Jindinig's may heusecii which case there Wonlfl additional con minals. V

My inventionforins e very eliicient gencrater of alternating' currentsThe tube 40 may be fixed directly to the piston rod of o ges engine esin Fig. 3 Where 70 indicotes the cylinders ofthe ges engines, thepistons 7l being Set to operate in opposite directions to each other. ofsrh units are used they may be connected in parallel, and thesynchronizing effect is so strong that no crank shefis fly wheels arefnecessary and t ie lcon he done by timing; the ignition elo This is ofgreat importance with engines of the type inventer? icy me where thepower per cylinder is so greet the shaft if it transmitted the power'ironici have approximately the seme diiameter evs the cylinrler.

What ciaim ns my invention is;-

l. Apparatus for generating electrical power, comprising' fr pluralityor" reciprocating engines and :i plurality of reciprocating clynamosoperatively connected to seid heat engines, said reciprocating Clynoroosbeing leiectricnliy connected; with each other enel having substantiallyno sei induction, coing thereby maintained in synchronisin.

2. Apparatus for generating alternetinglg' electrical power comprising:i plurality of reciprocating engines and n tplurality of reciprocatingdynamos operetiveiy connected to scid engines seid reciprocating i moebeing eiectricaily connected with each other and having substantially noseit-iiirnction, being thereby maintained in svnchronism, and thefrequency of the cin-rente rei. lered independent of :my naturalperico?, of the engine.

3. Apparatus for generating eiectriciel power comprising e pluralityreciprocating ensrines and a pnreiity of reciprocating alternatingcig/*names operatively oennecteii `Where o number l to Said engines,said reciprocating dynainos being electrically connected with each otherand having substantially no selfdnduction, being thereby maintained insynchronisni, and the frequency of the currents generated renderedindependent of any natural period of the engines.

4. Apparatus for generating electrical polwer -comprising a plurality ofengines and a plurality of reciprocating alternating dynamos operativelyconnected to said engines, said reciprocating dynarnos beingelectrically connected with each other and having substantially noself-induction, being thereby maintained in synchronisni.

5. Apparatus for generating alternating` electrical power comprising aplurality of engines and a plurality of reciprocating dynamosoperatively connected to said engines, said reciprocating dynalnos beingelectrically connected with each other and having substantially noself-induction, being thereby maintained in synchronisin.

6. Apparatus for generating alternating electrical power comprising aplurality of explosion engines and a plurality of reciproeating dynamesoperatively connected to said engines, said reciprocating dynainos beingelectrically connected in parallel with each other and havingsubstantially no selfinduction, being thereby maintained in synchronism.

7. Apparatus for generating electrical power comprising a plurality ofexplosion engines and a plurality oi' reciprocating alternating dynalnosoperatively connected to said engines, said reciprocating dynan'iosbeing electrically connected in parallel with each other and haringsubstantially no selfinduction, being thereby maintained insyncln'onism. i

8. Apparatus for generating electrical power comprising a plurality ofengines and a plurality of reciprocating dynainos opera tively connectedto said engines, said reciprocating dynamos being electrically connectedin parallel with each other and having substantially no self-induction,being thereby maintained in synchronism and adjustable in speedindependently of the natural frequencies of the engines.

REGINALD A. FESSENDEN.

